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[indietom]

Hi!
I'm trying to make a game with tiles and I've done a 2d array like this:

Code:

int map[15][20]={
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0},
{0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
};

Here's the const_ints

Code:

const int TILE_WIDTH = 16;
const int TILE_HEIGHT = 16;
const int TILES_NUMBER = 384;
const int TILE_SPRITES = 4;
const int TILE_WALL = 0;
const int TILE_EDGE = 1;
const int TILE_ROCKS = 2;
const int TILE_PLATFORM = 3;

And from serching through out the internetz I've gatherd that I'm suppoused to make a loop like this.

Code:

for(int i=0;i<15;i++)
             for(int j=0;j<20;j++)
             {
                // what goes here?
             }

Now my question is how do I render it?
I have an sdl_surface that has the tileset.

Thanks for any help 

[Christian Knudsen]

http://www.sdltutorials.com/sdl-coordinates-and-blitting

[indietom]

Is any of this right?

Code:

for(int i=0;i<15;i++)
             for(int j=0;j<20;j++)
             {
                SDL_Rect offset;
                offset.x = (x)*32;
                offset.y = x/32;
                SDL_BlitSurface(tiles, &clipTiles[map[i][j]], screen, &offset);
             }

[Christian Knudsen]

Where are you defining x?

[indietom]

Code:

int x = NULL;

[impulse9]

NULL*32 = 0, that won't do you any good.

I'm guessing you want something like:

Code:

offset.x = j*32;
offset.y = i*32;

[indietom]

NULL*32 = 0, that won't do you any good.

I'm guessing you want something like:

Code:

offset.x = j*32;
offset.y = i*32;

Oh dear god thank you 

[impulse9]

You're welcome.

[indietom]

Why is there a big black empty space there?
Here's the code.

Code:

for( int x = 0; x < 4; x++);
         {
             clipTiles[ x ].x = x*32;
             clipTiles[ x ].y = 0;
             clipTiles[ x ].h = 32;
             clipTiles[ x ].w = 32;
         }
         for( x = 0; x < 15; x++)
             for( y = 0; y < 20; y++)
             {
                SDL_Rect offset;
                offset.x = x*32;
                offset.y = y*32;
                SDL_BlitSurface(tiles, &clipTiles[map[x][y]], screen, &offset);
             }

The array is still the same.

[moi]

is this not because your array is too small to cover the screen?

[impulse9]

You should reverse the loop vars:

Code:

for( y = 0; y < 15; y++)
    for( x = 0; x < 20; x++)

[indietom]

You should reverse the loop vars:

Code:

for( y = 0; y < 15; y++)
    for( x = 0; x < 20; x++)

Tried using that but it crashed.

[Eigen]

I'm pretty sure you're accessing your array out of bounds ...

[indietom]

I'm pretty sure you're accessing your array out of bounds ...

Oh, thanks. I fixed it.